Polymyxin B Levels and Effects while Breastfeeding

Summary of Use during Lactation

Because it is poorly absorbed after topical application, polymyxin B is considered a low risk to the nursing infant.[1] Only water-miscible cream or gel products should be applied to the breast because ointments may expose the infant to high levels of mineral paraffins via licking.[2]

Drug Levels

Maternal Levels. Relevant published information was not found as of the revision date.

Infant Levels. Relevant published information was not found as of the revision date.

Polymyxin B Identification

Substance Name

Polymyxin B

CAS Registry Number

1404-26-8

Drug Class

Antiinfective Agents, Local

Antibacterial Agents

Administrative Information

LactMed Record Number

550

Last Revision Date

20130907

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